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3 years ago

Name some sub-cellular structures found in plant cells, but not animal cells

Chemistry

1 answer:

KATRIN_1 [288]3 years ago

8 0

Answer:

Plant cells have a cell wall, chloroplasts, plasmodesmata, and plastids used for storage, and a large central vacuole, whereas animal cells do not.

Explanation:

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What is the mass of 3.2 moles of h2O ?

Arturiano [62]

Answer:

$\boxed{\text{57.7 g} }$

Explanation:

The first step is to calculate the molar mass of H₂O:

$\begin{array}{rcr}\text{2 H} & = & 2.02\\\text{1 O} & = & 16.00\\\text{TOTAL} & = & \mathbf{18.02}\\\end{array}$

So, 1 mol has a mass of 18.02 g.

Next you calculate the mass of 3.2 mol of H₂O

$\begin{array}{rcl}m & = & \text{3.2 mol H$_{2}$O} \times \dfrac{\text{18.02 g H$_{2}$O}}{\text{1 mol H$_{2}$O}}\\ & = &\boxed{\textbf{57.7 g H$_{2}$O}} \\\end{array}$

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3 years ago

The names of the components FeS, NaCl, and Al(3)O(2) all end in the suffix.

anastassius [24]

Answer:

A) -ide

Explanation:

FeS = iron(II) sulfide or ferrous sulfide

NaCl = Sodium chloride

Al(3)O(2) = Aluminium oxide

3 0

3 years ago

What are the symbol and units for Enthaply

NISA [10]

Answer:

The SI unit for specific enthalpy is joule per kilogram. It can be expressed in other specific quantities by h = u + pv, where u is the specific internal energy, p is the pressure, and v is specific volume, which is equal to 1ρ, where ρ is the density.

Explanation:

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3 years ago

Electrons are deflected by a magnetic field because...

max2010maxim [7]

they have a negligible mass and they also have a negative charge so they have an association with the magnetic field. Do you remember polar? So electrons are negative and they attract the nucleus which is overall postivie (since protons are positive) so they act as magnetic since they both have an attraction

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3 years ago

What element has 2 occupied principals of energy levels

DerKrebs [107]

Helium i believe is the answer

5 0

3 years ago